Driving Power of the Digester Load Circulation Pump for the Slurry Deformation in a Feeder

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UDС

671.1.052.2

DOI:

10.17238/issn0536-1036.2016.6.166

Abstract

This paper investigates the influence of loading mode factors on the “chips–liquor” slurry deformation in the load circulation feeder of a digester. A power consumed by the high pressure pump is also consumed for the slurry deformation at loading. The experiment ob-jectives are: to establish a “chips–liquor” slurry deformation dependence, performed by the high-pressure pump in the feeder rotor channels of the digester load circulation; to obtain the equations and numerical values of the scales of similarity parameters for the slurry de-formation in the feeder rotor channels and an experimental model; to determine the power consumed by a high-pressure pump at the “chips–liquor” slurry deformation in the rotor channel of the load circulation feeder. We use the methods of the full factorial experiment and of similarity and dimensional analysis. On the basis of the methods of similarity and dimensional analysis we compile the design equations and determine numerical values of the following similarity scales of a standard feeder and a model: geometric, Poisson's ratio, strain energy and friction force, hydraulic radius, work of strain energy, velocity, loading time and deformation. The dependence of the slurry deformation during supply from the low-pressure zone to the high-pressure zone of load circulation is examined on a model. The relative deformation increases in proportion to the load time and pressure and is inversely proportional to a liquid module. The maximum power, consumed by the pump to deform raw material in the feeder rotor channel, is determined by the design parameters of the de-formation process. We should take into account the power consumption not only for the transportation of chips in the pipeline, but also for the slurry deformation in the load circula-tion feeder of a digester to calculate a high-pressure pump drive.

Authors

V.P. Sivakov, Doctor of Engineering Sciences, Professor A.P. Panychev, Candidate of Engineering Sciences, Associate Professor I.A. Partin, Senior Lecturer I.K. Kashapov, Postgraduate Student

Affiliation

Ural State Forest Engineering University, Sibirskiy trakt, 37, Yekaterinburg, Sverdlovsk region, 620100, Russian Federation; e-mail: metod@usfeu.ru

Keywords

power, rotor, high-pressure feeder, slurry.

For citation

Sivakov V.P., Panychev A.P., Partin I.A., Kashapov I.K. Driving Power of the Digester Load Circulation Pump for the Slurry Deformation in a Feeder. Lesnoy zhurnal (Forestry journal), 2016, no. 6, pp. 166–174. DOI: 10.17238/issn0536-1036.2016.6.166

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